ὀρθοεπής
From LSJ
ἐὰν ταῖς γλώσσαις τῶν ἀνθρώπων λαλῶ καὶ τῶν ἀγγέλων, ἀγάπην δὲ μὴ ἔχω, γέγονα χαλκὸς ἠχῶν ἢ κύμβαλον ἀλαλάζον → though I speak with the tongues of men and of angels and have not charity I am become as sounding brass or a tinkling cymbal
Greek (Liddell-Scott)
ὀρθοεπής: -ές, ὁ ὀρθοεπῶν, ὁ μετὰ ὀρθοεπείας, Χειρόγρ. Ἐσκουριάλου, fol. 425 vo.